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