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