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