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