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