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