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