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