One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,7)(3,5,4,8)(9,10,14,12)(11,15,13,16)(17,18,23,22)(19,26,21,24)(20,28,29,25)(27,31,30,32)(2,7)(3,4)(9,11,14,13)(10,15,12,16)(17,19,23,21)(18,24,22,26)(20,27,29,30)(25,31,28,32)(1,3,6,4)(2,8,7,5)(9,11,14,13)(10,16,12,15)(20,29)(25,28)(27,30)(31,32)(1,4,6,3)(2,5,7,8)(9,12,14,10)(11,15,13,16)(17,20)(18,25)(19,27)(21,30)(22,28)(23,29)(24,31)(26,32)(1,5)(2,3)(4,7)(6,8)(9,13,14,11)(10,15,12,16)(17,21,23,19)(18,24,22,26)(20,30,29,27)(25,31,28,32)(17,22,23,18)(19,26,21,24)(20,25,29,28)(27,31,30,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.