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