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