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