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