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