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