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