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