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