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