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