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