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