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