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