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