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