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