One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,7,12)(3,13,17,23)(4,9,20,27)(5,11,6,10)(8,15,24,16)(14,29,30,25)(18,32,31,22)(19,28,21,26)(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)(4,18,20,31)(5,16,6,15)(9,25,27,29)(10,13,11,23)(14,21,30,19)(22,28,32,26)(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)(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)(1,4)(2,9)(3,14)(5,19)(6,21)(7,20)(8,22)(10,26)(11,28)(12,27)(13,29)(15,18)(16,31)(17,30)(23,25)(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)(1,5,7,6)(2,10,12,11)(3,15,17,16)(4,19,20,21)(8,23,24,13)(9,26,27,28)(14,18,30,31)(22,25,32,29)(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.