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