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