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