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