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