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