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