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