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