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