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