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