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