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