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