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)(11,14)(12,15)(13,16)(17,18,23,20)(19,24,30,31)(21,25,22,26)(27,29,32,28)(1,3)(2,5)(4,8)(6,7)(9,11,13,12)(10,14,16,15)(17,19,23,30)(18,24,20,31)(21,28,22,29)(25,27,26,32)(9,11,13,12)(10,15,16,14)(17,20,23,18)(19,27,30,32)(21,25,22,26)(24,29,31,28)(2,6)(5,7)(17,21,23,22)(18,25,20,26)(19,28,30,29)(24,27,31,32)(3,8)(5,7)(9,12,13,11)(10,15,16,14)(19,29)(21,22)(24,32)(25,26)(27,31)(28,30)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.