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