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