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