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