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