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