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