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