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