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