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