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