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