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