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