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)(14,16)(17,18,21,24)(19,25,26,22)(20,23,28,30)(27,31,32,29)(33,34)(35,38)(36,44)(37,41)(39,43)(40,45)(42,47)(46,48)(2,4)(3,8)(19,26)(22,25)(27,32)(29,31)(33,35,37,43)(34,38,41,39)(36,42,45,48)(40,46,44,47)(1,3,5,8)(2,6,4,7)(9,10,13,12)(11,14,15,16)(17,18)(19,22)(20,23)(21,24)(25,26)(27,29)(28,30)(31,32)(33,35)(34,39)(36,42)(37,43)(38,41)(40,47)(44,46)(45,48)(1,3)(2,6)(4,7)(5,8)(9,11)(10,14)(12,16)(13,15)(17,19,21,26)(18,22,24,25)(20,27,28,32)(23,29,30,31)(33,34)(35,39)(36,40)(37,41)(38,43)(42,47)(44,45)(46,48)(1,4,5,2)(3,7,8,6)(9,12,13,10)(11,16,15,14)(17,20,21,28)(18,23,24,30)(19,27,26,32)(22,29,25,31)(33,36,37,45)(34,40,41,44)(35,42,43,48)(38,46,39,47)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.