One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,5)(4,7)(6,8)(9,10,14,12)(11,15,13,16)(17,18)(19,28)(20,26)(21,29)(22,24)(23,25)(27,31)(30,32)(2,3)(6,7)(9,11,14,13)(10,15,12,16)(17,19,23,22)(18,24,25,28)(20,29,30,27)(21,26,31,32)(1,2,5,3)(4,6,8,7)(9,11,14,13)(10,16,12,15)(18,25)(20,30)(24,28)(27,29)(1,3,5,2)(4,7,8,6)(9,12,14,10)(11,15,13,16)(17,20)(18,26)(19,27)(21,24)(22,29)(23,30)(25,32)(28,31)(1,4)(2,6)(3,7)(5,8)(9,13,14,11)(10,15,12,16)(17,21)(18,27)(19,26)(20,24)(22,32)(23,31)(25,29)(28,30)(17,22,23,19)(18,24,25,28)(20,27,30,29)(21,26,31,32)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.