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