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