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