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