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