A specific drawing of the JUMO 213E model is going to be hard to find, I think.
There is a colour drawing of an L.S and T.S. of the JUMO 213A in the Muller book.
Attached is a drawing of the two-stage supercharger (on RHS) showing the kind of impeller used and the swirl-throttle (drall drossel) in the 213E.
Can you tell us what drawings you already have to save duplication?