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