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