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