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