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