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