Well, yEd offers the possibility to import data from Excel spreadsheets, please see Import of Excel Files in the yEd Manual and various posts here in the forum for further information.
That said, yEd is mostly meant for manual diagram creation - even using Excel import, yEd's properties mapper, and yEd's automatic layout algorithms, you will need to perform some steps manually to create a diagram similar to the one linked in your question.
If you need a fully automated process, yEd is not the right tool for the job. Instead, you would need to develop a custom application based on the yFiles diagramming library (upon which yEd is built as well). So, if developing your own custom application is an option for you, take a look at yFiles.
