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)(17,18,24,36,23,27,22,28)(19,29,21,25,32,42,31,39)(20,26,37,46,34,41,35,40)(30,43,33,38,44,48,45,47)(9,10)(11,15)(12,14)(13,16)(17,19,23,32)(18,25,27,39)(20,30,34,44)(21,24,31,22)(26,38,41,47)(28,42,36,29)(33,37,45,35)(40,48,46,43)(1,3,5,4)(2,6,7,8)(9,11,12,16)(10,13,14,15)(17,20,23,34)(18,26,27,41)(19,30,32,44)(21,33,31,45)(22,35,24,37)(25,38,39,47)(28,40,36,46)(29,43,42,48)(11,16)(13,15)(17,21,22,19,23,31,24,32)(18,25,28,29,27,39,36,42)(20,33,35,30,34,45,37,44)(26,38,40,43,41,47,46,48)(1,4,5,3)(2,6,7,8)(10,14)(13,15)(18,27)(20,34)(25,39)(28,36)(29,42)(30,44)(33,45)(35,37)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.