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