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