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