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