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