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