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