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)(19,26)(20,25)(21,30)(22,24)(23,28)(27,31)(29,32) involution — undirected(9,10)(11,14)(12,13)(15,16)(17,19,21,28,22,29,20,27)(18,23,25,26,24,31,30,32)(2,5)(6,8)(10,13)(14,16)(18,24)(23,31)(25,30)(26,32) involution — undirected(1,3,4,7)(2,6,5,8)(9,11)(10,14)(12,15)(13,16)(11,15)(14,16)(17,20,22,21)(18,25,24,30)(19,27,29,28)(23,26,31,32)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.