This tutorial provides the template and CSS which enables you to display posts from each sub category in a 2,3,4 or 6 column grid like you see in the following example:
The styling is based on a example this person liked.
The template is based on this question from a member of the StudioPress community:
I am looking to put posts into a gallery so that there is a thumbnail and a title linking to each post in a category. I would like to make a different page with a list of each post in each category. Do you know how I can do this?
The template includes search links to each child category archive page which you can also display in a 2,3,4 or 6 column grid using the same code in the template.
Simply name your template the same as your category which in this case is diy so the template file name category-diy.php. Upload the file to your child theme folder.
Then add the CSS to the end of your child themes style.css file.
You can then create sub categories like this:
Tested on the Genesis Sample child theme by StudioPress.
Very simple indeed!
Here’s the template available free for registered members