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