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