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