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