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