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