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