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