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