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