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