One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,12,7,10,5,11)(3,13,15,28,16,8,22,24)(4,17,20,27,19,9,21,26)(14,23,31,32,30,29,18,25)(33,34)(35,43)(36,47,50,40)(37,42)(38,41)(39,45)(44,53,60,59)(46,58)(48,55,63,61)(49,62,64,56)(51,54)(52,57)(1,3)(2,8)(4,18,19,31)(5,15)(6,22)(7,16)(9,25,17,32)(10,13)(11,24)(12,28)(14,20,30,21)(23,26,29,27)(33,35)(34,39,41,43)(36,48)(37,51)(38,45)(40,55,47,61)(42,58,57,54)(44,49)(46,52)(50,63)(53,62,59,56)(60,64)(1,4)(2,9,10,17)(3,14)(5,21)(6,20)(7,19)(8,23,13,29)(11,27,12,26)(15,31)(16,30)(18,22)(24,32,28,25)(33,36)(34,40)(35,44,45,60)(37,49)(38,50)(39,53,43,59)(41,47)(42,56)(46,48,51,63)(52,64)(54,55,58,61)(57,62)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.