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