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