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