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