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