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