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