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