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