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