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