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