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