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