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