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