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