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)(17,18,22,26)(19,27,30,31)(20,24,21,25)(23,29,32,28)(1,3,6,2)(4,9,12,7)(5,8,15,10)(11,14,16,13)(17,19,22,30)(18,23,26,32)(20,29,21,28)(24,27,25,31)(1,4)(2,7)(3,9)(5,14)(6,12)(8,16)(10,11)(13,15)(19,28)(20,21)(23,27)(24,25)(29,30)(31,32) involution — undirected(17,20,22,21)(18,24,26,25)(19,29,30,28)(23,27,32,31)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.