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