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