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