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