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