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