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