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