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