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