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