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