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