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