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