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