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