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