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