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