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