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