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