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