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