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