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)(18,22)(20,27)(23,28)(24,29)(26,31)(30,32)(1,3,4,8)(2,5,6,7)(9,11)(10,13)(12,15)(14,16)(19,25)(23,30)(26,31)(28,32)(11,15)(13,16)(17,18,20,22,21,24,27,29)(19,23,26,28,25,30,31,32)(11,15)(13,16)(17,19,21,25)(18,23,24,30)(20,26,27,31)(22,28,29,32)(10,14)(13,16)(18,24)(19,25)(22,29)(26,31) 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.