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