Projects from most modern programs can usually be exported as PDF (Portable Document Format) documents either via some dedicated Export function or via a virtual PDF printer driver using the Print function found in the program.
EDraw should be no exception; exporting .eddx files to .pdf should be doable from within the program's menus. Unfortunately, we do not know about any other 3rd party program capable of eddx to pdf conversion, and it might not even exist.
Updated: April 22, 2024