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