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