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