Get Category of Current Custom Post Type
The following will list the categories of the current post type. If you want to exclude one of the categories so it does not show add this:
List Custom Post Type Categories
The following will list the categories of a custom post type. Code Credit to: http://www.paulund.co.uk/display-categories-of-a-custom-post-type
Show a Post’s Categories
The following snippet will display the categories in a list for the post. The comma in the parenthesis separates each category with a comma.