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