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