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