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