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