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