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