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