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