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