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