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