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