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