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