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