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