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