What is true of it
Edim7 is E, G, B♭ and D♭ — 1, b3, b5 and bb7 counted from E.
The easiest of the 1 fingering below is 9a9a: 3 fingers, one of them barring the 9th fret, held at the 9th fret.
None of them uses an open string, so this chord moves up the neck unchanged — the same shape 1 fret higher is the chord a semitone above.
Where its notes are on the neck
The brass dots are E, the root. Everything else is a chord tone with its degree printed in it.
With a different note underneath
Edim7/G
0101
Edim7/B♭
3434
Edim7/D♭
6767
An inversion is the same chord with a different note lowest. The name changes to a slash name because the bass is what a listener hears as the foundation.