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