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