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