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