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