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