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