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