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