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