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