How print category on custom posts?

Hi,

I have a question about category in custom posts.
I have a function code:

function opisy() {
	$labels = array(
		'name'               => _x( 'CV', 'post type general name' ),
		'singular_name'      => _x( 'cv', 'post type singular name' ),
		'add_new'            => __( 'Dodaj nowe'),
		'add_new_item'       => __( 'Dodaj nowe' ),
		'edit_item'          => __( 'Edytuj cv' ),
		'new_item'           => __( 'Nowe cv' ),
		'all_items'          => __( 'Wszystkie cv' ),
		'view_item'          => __( 'Zobacz cv'),
		'search_items'       => __( 'Szukaj cv '),
		'not_found'          => __( 'Nie znaleziono pozycji' ),
		'not_found_in_trash' => __( 'Nie znaleziono pozycji w koszu' ),
		'parent_item_colon'  => '',
		'menu_name'          => 'CV');
	$args = array(
		'labels'        => $labels,
		'public'        => true,
		'show_ui' => true,
		'publicly_queryable' => true,
		'rewrite' => array( 'slug' => 'opisy' ),
                'has_archive'   => true,
		'capability_type' => 'post',
		'hierarchical' => false,
		'menu_position' => null,
		'supports' => array('title','editor','thumbnail'),
                'taxonomies' => array('category')
	);
	register_post_type( 'opisy', $args );
}
add_action( 'init', 'opisy' );

and I have a base about CV with category.

I’d like to print all regords by category ex.
category 1
record 1
record 2
category 2
record 3
record 4
etc.

I have a code in example.php:

$args_reko = array(
	'post_type' => 'opisy',
	'post_per_page'=> '100',
	'meta_key'		=> 'category',
	'order'			=> 'ASC'
);
$rekom = new WP_Query( $args_reko );
if( $rekom->have_posts() ) {
	while( $rekom->have_posts() ) {
		$rekom->the_post();
			the_title('<p><i><span class="pink">','</span></i>: ');
			the_content();
}
}

How can I print records depends on category?

Thank You for Your time.