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