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