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