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