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