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