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