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