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