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