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