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