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