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