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