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