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