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