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