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