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