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