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