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