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