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)(19,25)(20,26)(21,31)(22,27)(23,28)(24,29)(30,32)(9,11)(10,13)(12,15)(14,16)(17,19,22,29)(18,23,27,32)(20,28,21,30)(24,31,25,26)(1,3,4,8)(2,5,6,7)(10,14)(11,15)(17,19)(18,24)(20,30)(21,28)(22,29)(23,26)(25,27)(31,32)(11,15)(13,16)(17,19)(18,25)(20,30)(21,28)(22,29)(23,31)(24,27)(26,32) involution — undirected(17,20,22,21)(18,26,27,31)(19,28,29,30)(23,24,32,25)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.