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