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