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