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