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