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