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