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