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