"EasyDiscuss - Categories" Module

I have installed and enabled the "EasyDiscuss - Categories" module and experimented with settings. I want the module to look exactly same as when I click on the 'Categories' icon (above the posts), but it looks nothing like it. How can I get it to look the same?

It seems to have completely different styling. (The styling should in fact be inherited from the template, but even if it looks same as EasyDiscuss style, that would help.)

thanks,
Geoff