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)(17,18,22,24)(19,21,26,23)(20,28,30,25)(27,29,32,31)(1,3,5,8)(2,6,4,7)(9,11,14,13)(10,15,12,16)(17,19,22,26)(18,23,24,21)(20,27,30,32)(25,29,28,31)(1,2,5,4)(3,6,8,7)(10,12)(15,16)(18,24)(19,26)(25,28)(27,32)(9,12,14,10)(11,16,13,15)(17,18)(19,23)(20,25)(21,26)(22,24)(27,29)(28,30)(31,32)(1,2,5,4)(3,6,8,7)(9,13,14,11)(10,16,12,15)(17,20)(18,25)(19,27)(21,31)(22,30)(23,29)(24,28)(26,32)(1,4,5,2)(3,7,8,6)(17,21,22,23)(18,26,24,19)(20,29,30,31)(25,27,28,32)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.