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