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