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