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