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