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