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