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