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