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