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