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