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)(19,25)(20,26)(21,27)(22,38)(23,28)(24,29)(30,39)(31,41)(32,42)(33,40)(34,43)(35,46)(36,44)(37,45)(47,48)(2,6)(7,8)(9,11)(10,13)(12,16)(14,15)(17,19,24,20)(18,25,29,26)(21,34,37,47)(22,31,23,33)(27,43,45,48)(28,40,38,41)(30,35,32,36)(39,46,42,44)(1,3,5,4)(2,7,6,8)(10,14)(11,16)(17,20,24,19)(18,26,29,25)(21,30,37,32)(22,31,23,33)(27,39,45,42)(28,40,38,41)(34,35,47,36)(43,46,48,44)(1,3,5,4)(2,7,6,8)(10,14)(13,15)(17,21,24,37)(18,27,29,45)(19,30,20,32)(22,36,23,35)(25,39,26,42)(28,46,38,44)(31,47,33,34)(40,43,41,48)(1,4,5,3)(2,7,6,8)(10,14)(13,15)(17,22,24,23)(18,28,29,38)(19,31,20,33)(21,35,37,36)(25,40,26,41)(27,44,45,46)(30,34,32,47)(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.