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