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