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