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