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