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