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