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