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)(17,18,22,20,23,25,21,26)(19,27,29,28,30,31,32,24)(1,3,4,7)(2,5,6,8)(9,10)(11,15)(12,14)(13,16)(17,19,23,30)(18,24,25,28)(20,31,26,27)(21,29,22,32)(2,6)(5,8)(9,11)(10,13)(12,16)(14,15)(18,25)(20,26)(24,28)(27,31) involution — undirected(11,16)(13,15)(17,20,22,25,23,26,21,18)(19,28,29,31,30,24,32,27)(10,14)(13,15)(17,21,23,22)(18,26,25,20)(19,29,30,32)(24,27,28,31)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.