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)(17,18,22,25,21,23,20,29)(19,24,27,32,28,26,30,31)(1,2,4,5)(3,7,8,6)(9,10)(11,15)(12,14)(13,16)(18,23)(24,26)(25,29)(31,32)(9,11)(10,13)(12,16)(14,15)(17,18)(19,26)(20,25)(21,23)(22,29)(24,28)(27,32)(30,31) involution — undirected(1,3,4,8)(2,6,5,7)(11,16)(13,15)(17,19,21,28)(18,24,23,26)(20,30,22,27)(25,32,29,31)(10,14)(13,15)(17,20,21,22)(18,25,23,29)(19,27,28,30)(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.