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