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