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