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