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)(11,15)(12,13)(14,16)(17,18)(19,24)(20,22)(21,23)(25,26)(27,31)(28,32)(29,30)(2,5)(6,7)(9,11,14,12)(10,13,16,15)(17,19)(18,20)(21,22)(23,24)(26,30)(27,32)(1,3)(2,6)(4,8)(5,7)(9,11,14,12)(10,15,16,13)(17,18)(19,24)(20,22)(21,23)(25,27,29,32)(26,31,30,28)(1,3)(2,7)(4,8)(5,6)(9,12,14,11)(10,15,16,13)(17,18)(19,20)(21,23)(22,24)(25,28)(26,27)(29,31)(30,32)(1,2)(3,6)(4,5)(7,8)(9,13,14,15)(10,12,16,11)(17,20)(18,22)(19,23)(21,24)(25,26)(27,31)(28,32)(29,30)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.