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