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