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