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