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