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