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