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