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