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