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