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