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