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