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