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