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