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