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