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