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