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