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