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