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