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