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