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