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