Sometimes it helps to also provide a drawio file that has the elements you wan't (eg. cloud service icons or whatever), but you just feed it the content you want diagrammed and let it eat.
Even if it's not completely correct, it usually creates something that's much closer to complete than a blank page.
Here's the chat I used for the drawing - https://aistudio.google.com/app/prompts?state=%7B%22ids%22:%...
Save the xml, import to drawio
Sometimes it helps to also provide a drawio file that has the elements you wan't (eg. cloud service icons or whatever), but you just feed it the content you want diagrammed and let it eat.
Even if it's not completely correct, it usually creates something that's much closer to complete than a blank page.
Drawio drawings are just XML, its possible it can generate that directly
hopefully op will answer if that's what he is doing