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