If you look at the diagrams above, you will notice that only one shape is required to play all twelve possible diminished 7th chords. Like augmented chords, the diminished 7th is a symmetrical chord which means that any of the notes in the chord can be the root note. Therefore, each diminished 7th chord has four possible names (or sometimes more, counting enharmonic notes - e.g. Bb = A# ). There are really only three different diminished chords, each one having at least four names. They can all be played by forming a diminished 7th chord and then moving the shape up the neck one fret at a time. After the third chord you get back to a repeat of the first one, as demonstrated below.
Here are several more shapes for diminished 7th chords, each shown with all their names. Each shape can be played anywhere on the fretboard.
Diminished 7ths are commonly used to connect scale tone chords as shown here in the key of Bb