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