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