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