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