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