Theres an api to get the posted data to an xform on the xform class called getposteddata
You can use that to render results on a template that you lock to a group. I have a client who has it that way and displays result in a tabular form. Excel export is another way if its a rare occurence
Is it possible to have a user group that can only view results of an xform, and not make any edits to the form itself? If so, how?