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