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