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