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