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