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