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