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