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