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