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