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