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