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