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