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