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