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