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