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