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