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