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