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)(7,11)(12,15)(13,16)(17,18)(19,23,28,37)(20,30)(21,33)(22,25)(24,32)(26,35)(27,41,42,48)(29,45,44,38)(31,40)(34,39)(36,46,47,43)(1,3,4,13,6,12,5,11)(2,7,14,15,9,16,8,10)(17,19,22,28)(18,23)(20,27,31,42)(21,29,35,44)(24,36)(25,37)(26,38)(30,41)(32,43,34,46)(33,45)(39,47)(40,48)(1,2)(3,7)(4,14)(5,8)(6,9)(10,11)(12,16)(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)(37,47)(38,48)(41,45)(43,44) involution — undirected(1,4,6,5)(2,8,9,14)(3,11,12,13)(7,15,16,10)(19,28)(20,31)(23,37)(24,39)(29,44)(30,40)(32,34)(38,45)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.