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