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)(11,13)(12,14)(15,16)(17,18,22,27)(19,28,23,24)(20,31,34,38)(21,26,37,44)(25,29,41,32)(30,42,35,39)(33,47,36,48)(40,45,43,46)(1,3)(2,6)(4,7)(5,8)(9,10)(11,15)(12,14)(13,16)(17,19,22,23)(18,24,27,28)(20,32,34,29)(21,35,37,30)(25,31,41,38)(26,42,44,39)(33,45,36,46)(40,48,43,47)(1,2,5,4)(3,6,8,7)(9,11)(10,13)(12,16)(14,15)(17,20,19,29,22,34,23,32)(18,25,24,38,27,41,28,31)(21,36,30,46,37,33,35,45)(26,43,39,47,44,40,42,48)(1,2,5,4)(3,7,8,6)(11,16)(13,15)(17,21)(18,26)(19,30)(20,33)(22,37)(23,35)(24,39)(25,40)(27,44)(28,42)(29,45)(31,47)(32,46)(34,36)(38,48)(41,43)(1,4,5,2)(3,7,8,6)(10,14)(13,15)(18,27)(20,34)(21,37)(24,28)(29,32)(30,35)(40,43)(47,48)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.