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