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