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