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