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