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