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