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