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