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