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