One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,6)(5,8)(9,10)(11,15)(12,13)(14,16)(17,18)(19,24)(20,30)(21,27)(22,32)(23,28)(25,31)(26,29) involution — undirected(1,3,5,4)(2,6,8,7)(9,10)(11,14)(12,13)(15,16)(17,19,23,20)(18,24,28,30)(21,29,22,31)(25,27,26,32)(1,3,5,4)(2,7,8,6)(10,13)(14,15)(17,20,22,31,23,19,21,29)(18,25,27,30,28,26,32,24)(1,4,5,3)(2,6,8,7)(9,11,12,16)(10,14,13,15)(17,19,22,29,23,20,21,31)(18,26,27,24,28,25,32,30)(2,8)(6,7)(17,21,23,22)(18,27,28,32)(19,29,20,31)(24,26,30,25)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.