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