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