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