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