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