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