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