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