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