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