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)(11,14)(12,15)(13,16)(17,18,21,23)(19,20,25,24)(22,26,30,32)(27,29,31,28)(1,3)(2,5)(4,8)(6,7)(9,11,13,12)(10,14,16,15)(18,23)(19,27)(20,28)(22,30)(24,29)(25,31)(9,11,13,12)(10,15,16,14)(17,19,21,25)(18,24,23,20)(22,31,30,27)(26,29,32,28)(2,6)(5,7)(18,23)(20,24)(26,32)(28,29) involution — undirected(3,8)(5,7)(9,12,13,11)(10,15,16,14)(17,20,21,24)(18,25,23,19)(22,28,30,29)(26,27,32,31)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.