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