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