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)(17,18,21,22)(19,25,26,23)(20,24,28,29)(27,31,32,30)(3,7)(6,8)(10,13)(11,16)(18,22)(20,28)(23,25)(27,32) involution — undirected(1,2)(3,6)(4,5)(7,8)(9,11)(10,14)(12,13)(15,16)(19,26)(23,25)(27,32)(30,31) involution — undirected(9,12,15,14)(10,11,13,16)(17,19,21,26)(18,23,22,25)(20,27,28,32)(24,30,29,31)(1,3,4,7)(2,6,5,8)(9,13,15,10)(11,12,16,14)(17,18)(19,23)(20,24)(21,22)(25,26)(27,30)(28,29)(31,32)(1,2)(3,6)(4,5)(7,8)(9,14,15,12)(10,16,13,11)(17,20,21,28)(18,24,22,29)(19,27,26,32)(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.