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)(11,14)(12,13)(15,16)(17,18,24,20)(19,25,30,21)(22,26,23,27)(28,32,31,29)(1,3,5,4)(2,6,7,8)(17,19,24,30)(18,25,20,21)(22,29,23,32)(26,28,27,31)(10,13)(14,16)(17,20,24,18)(19,28,30,31)(21,29,25,32)(22,26,23,27)(9,11,12,15)(10,14,13,16)(17,21)(18,19)(20,30)(22,31)(23,28)(24,25)(26,29)(27,32)(1,4,5,3)(2,6,7,8)(17,22)(18,26)(20,27)(23,24)(28,31)(29,32)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.