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)(18,22)(19,25)(24,29)(26,31)(33,34)(35,36)(37,41)(38,39)(40,43)(42,44)(45,48)(46,47)(1,3,6,5)(2,7,4,8)(9,10,12,14)(11,13,15,16)(19,25)(23,28)(26,31)(30,32)(34,39)(36,40)(41,47)(44,45)(1,4,6,2)(3,7,5,8)(17,18,21,22)(19,23,25,28)(20,24,27,29)(26,30,31,32)(33,35)(34,40)(36,39)(37,42)(38,43)(41,45)(44,47)(46,48)(9,11)(10,13)(12,15)(14,16)(17,19,21,25)(18,23,22,28)(20,26,27,31)(24,30,29,32)(33,36,38,40)(34,35,39,43)(37,45,46,44)(41,48,47,42)(1,5,6,3)(2,7,4,8)(17,20,21,27)(18,24,22,29)(19,26,25,31)(23,30,28,32)(33,37,38,46)(34,41,39,47)(35,42,43,48)(36,44,40,45)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.