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