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