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