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)(17,18,22,23,21,26,20,25)(19,24,29,30,27,31,28,32)(1,3,4,7)(2,5,6,8)(9,11)(10,13)(12,15)(14,16)(18,23)(20,22)(24,30)(25,26)(28,29)(31,32)(2,6)(5,8)(10,14)(11,15)(17,19)(18,24)(20,28)(21,27)(22,29)(23,30)(25,32)(26,31) involution — undirected(9,11)(10,13)(12,15)(14,16)(19,27)(24,31)(28,29)(30,32) involution — undirected(11,15)(13,16)(19,27)(24,31)(28,29)(30,32) 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.