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