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