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