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