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