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