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