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