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