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