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