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