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