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