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