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