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