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