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