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