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