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