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