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