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