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