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