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