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