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