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