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