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