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