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