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