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