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