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