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