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