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