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