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