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