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