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