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