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