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