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