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