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