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