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