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