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