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