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