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)(19,28)(20,21)(22,32)(23,25)(24,29)(26,31)(27,30)(33,34,39,37)(35,42,41,38)(36,44,47,40)(43,46,45,48)(1,3,5,10)(2,6,7,13)(4,9,12,16)(8,14,11,15)(17,19,23,29)(18,24,25,28)(20,30,31,22)(21,32,26,27)(33,35,39,41)(34,38,37,42)(36,45,47,43)(40,48,44,46)(2,7)(6,13)(8,11)(14,15)(18,25)(19,29)(20,31)(27,32)(33,34,39,37)(35,38,41,42)(36,44,47,40)(43,48,45,46)(1,2)(3,6)(4,8)(5,7)(9,14)(10,13)(11,12)(15,16)(17,20)(18,26)(19,30)(21,25)(22,29)(23,31)(24,27)(28,32)(33,36,39,47)(34,40,37,44)(35,43,41,45)(38,46,42,48)(1,3)(2,6)(4,9)(5,10)(7,13)(8,14)(11,15)(12,16)(17,21,23,26)(18,20,25,31)(19,27,29,32)(22,28,30,24)(33,37,39,34)(35,38,41,42)(36,40,47,44)(43,48,45,46)(1,4,5,12)(2,8,7,11)(3,9,10,16)(6,14,13,15)(17,22,23,30)(18,27,25,32)(19,20,29,31)(21,28,26,24)(33,38)(34,41)(35,37)(36,46)(39,42)(40,45)(43,44)(47,48)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.