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)(17,18,22,21)(19,24,26,23)(20,28,30,25)(27,31,29,32)(1,2,5,6)(3,7,4,8)(17,19)(18,23)(20,27)(21,24)(22,26)(25,31)(28,32)(29,30)(10,13)(14,15)(18,21)(19,26)(25,28)(27,29) involution — undirected(9,10)(11,14)(12,13)(15,16)(17,19)(18,24)(20,29)(21,23)(22,26)(25,31)(27,30)(28,32) involution — undirected(1,3,5,4)(2,7,6,8)(9,11,12,16)(10,14,13,15)(17,20)(18,25)(19,27)(21,28)(22,30)(23,31)(24,32)(26,29)(1,4,5,3)(2,8,6,7)(17,21,22,18)(19,23,26,24)(20,28,30,25)(27,31,29,32)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.