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