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