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