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