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