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