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