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