Does anyone know if we can edit our category pages. If you

Does anyone know if we can edit our category pages. If you look at this page here:

http://www.veganella.com/category/vegan-meat-recipes/

Id like to make these pages with thumbnail images going to different sections. I know how to go into categories and add the meta description, keywords etc, but can we edit them in any other way?

Thanks,

Kris