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