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