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