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