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