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