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