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