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