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