A good question, for which there are a number of solutions.
1. You can create eaDocX Sections for each diagram(s) then tell eaDocX to print the contents of the diagram as well as the image. This works well where the diagrams are the focus, and the locationS of elements less so.
2. Create some EA Model Views, and put those into sections. This way, each Model View is a shopping list of elements, packages and diagrams. Useful is you have some of these already
3. Put the diagrams in their own sections, then add others with the elements, using either simple package sections, or element reports.
There are probably more, but try these to see how practical they are for you.
Also remember that if you are trialling eaDocX, you get a free hour of support, to help you get started.