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