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