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