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