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