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