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