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