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