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