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