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