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