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