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