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