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