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