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