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