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