When I work with people, I generally use a large marker pad for visualizing the content and connections emerging from the dialogue. Everyone can then see what they're discussing and very quickly identify what is different from what they had intended. It helps everyone get the picture.
Finding great resources for visual modeling is rare. Marshall Clemens from Idiagram seems to have the gift. Just run your cursor over the the list under the "Art of Complex Problem Solving". Several different graphics will appear to explain the topic.
His talent seems to be embedding the content in a simple and elegant design so that the graphics reveal the story you're trying to tell.