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