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