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