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