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