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