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