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