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