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)(11,16,12,15)(17,18)(19,21)(20,24)(22,23)(25,26)(27,28)(29,31)(30,32)(1,3,6,5)(2,7,8,4)(10,13)(15,16)(18,23)(21,24)(25,27)(26,29)(28,32)(30,31)(2,8)(3,5)(9,11,14,12)(10,15,13,16)(17,19,22,20)(18,21,23,24)(25,28,30,29)(26,31,32,27)(1,4)(2,3)(5,8)(6,7)(9,12,14,11)(10,15,13,16)(17,20,22,19)(18,24,23,21)(25,29,30,28)(26,31,32,27)(1,5,6,3)(2,4,8,7)(9,13,14,10)(11,15,12,16)(17,21,22,24)(18,19,23,20)(25,26)(27,28)(29,31)(30,32)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.