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