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