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