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