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