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