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