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