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