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