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