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