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