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