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