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