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