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