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)(11,15)(12,16)(13,14)(17,18,22,24)(19,26,30,32)(20,23,31,29)(21,28,27,25)(2,5)(6,8)(10,14)(11,12)(17,19,21,29,22,30,27,23)(18,20,25,26,24,31,28,32)(1,3,4,7)(2,6,5,8)(9,11,13,12)(10,15,14,16)(17,19,27,23,22,30,21,29)(18,20,28,32,24,31,25,26)(9,12,13,11)(10,16,14,15)(17,20,22,31)(18,23,24,29)(19,28,30,25)(21,26,27,32)(10,14)(15,16)(18,24)(20,31)(25,28)(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.