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