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