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