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