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