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)(31,32)(33,34)(35,44)(36,37)(38,48)(39,41)(40,45)(42,47)(43,46)(4,11)(8,14)(10,15)(12,16)(17,18,22,19)(20,25,28,23)(21,24,30,26)(27,32,29,31)(33,35,39,45)(34,40,41,44)(36,46,47,38)(37,48,42,43)(2,7)(3,9)(8,14)(10,15)(34,41)(35,45)(36,47)(43,48) involution — undirected(1,3)(2,5)(4,10)(6,9)(7,13)(8,12)(11,15)(14,16)(17,19,22,18)(20,25,28,23)(21,26,30,24)(27,32,29,31)(33,36)(34,42)(35,46)(37,41)(38,45)(39,47)(40,43)(44,48)(1,4)(2,8)(3,10)(5,12)(6,11)(7,14)(9,15)(13,16)(17,20,22,28)(18,23,19,25)(21,29,30,27)(24,32,26,31)(33,37,39,42)(34,36,41,47)(35,43,45,48)(38,44,46,40)(1,5)(2,3)(4,12)(6,13)(7,9)(8,10)(11,16)(14,15)(17,21,22,30)(18,24,19,26)(20,27,28,29)(23,31,25,32)(33,38,39,46)(34,43,41,48)(35,36,45,47)(37,44,42,40)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.