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