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