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