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)(17,18,22,23)(19,21,26,24)(20,25,28,30)(27,29,32,31)(33,34)(35,38)(36,39)(37,42)(40,45)(41,44)(43,47)(46,48)(3,9)(7,13)(10,15)(14,16)(18,23)(20,28)(21,24)(27,32)(33,34,38,35)(36,41,44,39)(37,40,45,42)(43,47,48,46)(2,6)(7,13)(8,11)(14,16)(18,23)(19,26)(20,28)(29,31)(34,35)(39,41)(40,42)(46,47) involution — undirected(1,2)(3,7)(4,8)(5,6)(9,13)(10,14)(11,12)(15,16)(17,19)(18,24)(20,27)(21,23)(22,26)(25,31)(28,32)(29,30)(33,35,38,34)(36,41,44,39)(37,42,45,40)(43,47,48,46)(1,3)(2,7)(4,10)(5,9)(6,13)(8,14)(11,16)(12,15)(17,20)(18,25)(19,27)(21,29)(22,28)(23,30)(24,31)(26,32)(33,36)(34,39)(35,41)(37,43)(38,44)(40,46)(42,47)(45,48) involution — undirected(1,4,5,12)(2,8,6,11)(3,10,9,15)(7,14,13,16)(17,21,22,24)(18,19,23,26)(20,29,28,31)(25,27,30,32)(33,37)(34,40)(35,42)(36,43)(38,45)(39,46)(41,47)(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.