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