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