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