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