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