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