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