Organizations

I am trying to create a "catalog" style view of organizations. The site is a Chamber of Commerce site and the Orgs are usually business members and the catalog view would be for visitors to the site to use for finding local businesses that are chamber members.

So I have created a taxonomy with terms and sub-terms to categorize those businesses. I'd like to show the parent terms with all of their sub-terms on a page. So:

Banking and Finance
-Banks
-Financial Planning

Computers & Technology
-Computer Services
-Web Design