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