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