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