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