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