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