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