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