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