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