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)(19,24)(20,26)(21,25)(22,27)(23,28)(29,31)(30,32)(9,11)(10,13)(12,16)(14,15)(17,19,22,29)(18,24,27,31)(20,30,21,23)(25,28,26,32)(2,5)(6,8)(10,14)(11,16)(17,20,23,19,22,21,30,29)(18,25,28,31,27,26,32,24)(10,14)(13,15) involution — undirected(1,3,4,7)(2,6,5,8)(17,21,23,29,22,20,30,19)(18,26,28,24,27,25,32,31)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.