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