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