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