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