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