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