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