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