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