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